A US woman who shot and killed her husband and two adult children before taking her own life is thought to have committed the shocking crime as a result of being ostracised from the religion she was raised in.

A federal judge sentenced a former Arkansas judge Wednesday to five years in prison — a stiffer punishment than prosecutors recommended — after he admitted giving young male defendants lighter sentences in return for personal benefits that included sexual favours.

Every time I tell a mate I’m doing a story on cryptocurrency, they invariably ask me the same two questions: should they invest their own hard-earned money, and which cryptocurrency will get them a Lamborghini/yacht/island quickest?

In a 60 Minutes online exclusive, reporter Liz Hayes quizzed Australian Prime Minister Malcolm Turnbull on his relationship with the unpredictable Twitter aficionado and US president Donald Trump ahead of their meeting at the White House Friday.

Problem tenants could go: Qld government

Queensland's government is considering a three-strikes policy to evict antisocial public housing tenants.

Public Works Minister Bruce Flegg confirmed on Wednesday a policy was being considered under which tenants would be asked to leave if they received three strikes in a year for holding noisy parties or vandalising property.

Dr Flegg said the policy would send a clear message to the small minority of public housing tenants who did the wrong thing.

"If they don't appreciate their homes, there are plenty of others who will," he told AAP.

"But it's important to acknowledge that the majority of public housing tenants do the right thing."

There are more than 25,000 people waiting for social housing in Queensland.

Dr Flegg said the policy would be based on the Western Australian model and would include measures to ensure evictees did not drift into homelessness.